Ross,
I can't offer any comments on the ideas you present, except that it seems highly unlikley that Britain would require any vehicles from Canada.
The British had a surplus of armoured cars as there was little employment for them on the Western Front. The 40 Eaton Battery Jeffrey/Quad/Russell cars languished in England for two years before someone found a use for them in Ireland and India.
The British used a number of types of armoured and semi-armoured cars in Russia, and they are well documented.
This Russian web page has descriptions, photos and numbers of vehicles used by the Belgian and British Squadrons, and the Russian units.
http://wio.ru/tank/for-rus.htm
http://wio.ru/tank/ww1ba.htm
You can find a good listing of the various types of British Armoured cars here:
http://mailer.fsu.edu/~akirk/tanks/G...rVehicles.html
This is the main page. If you look under Canada, you will find images of most of the types of vehicles used by Canadians in both wars.
http://mailer.fsu.edu/~akirk/tanks/
As for the rest, we will have to wait until the photographs surface.
Gord